Fix Beta Testers access courseware in self-paced courses

ECOM-3612

lms/djangoapps/courseware/access_utils.py

@@ -63,8 +63,11 @@ def check_start_date(user, days_early_for_beta, start, course_key):
         return ACCESS_GRANTED
     else:
         now = datetime.now(UTC())
+        if start is None or in_preview_mode():
+            return ACCESS_GRANTED
+
         effective_start = adjust_start_date(user, days_early_for_beta, start, course_key)
-        if start is None or now > effective_start or in_preview_mode():
+        if now > effective_start:
             return ACCESS_GRANTED
 
         return StartDateError(start)

lms/djangoapps/courseware/tests/test_self_paced_overrides.py

@@ -2,14 +2,20 @@
 Tests for self-paced course due date overrides.
 """
 
-from datetime import datetime
+import datetime
+import pytz
+
 from dateutil.tz import tzutc
 from django.test.utils import override_settings
+from mock import patch
+
+from courseware.tests.factories import BetaTesterFactory
+from courseware.access import has_access
 
-from student.tests.factories import UserFactory
 from lms.djangoapps.ccx.tests.test_overrides import inject_field_overrides
 from lms.djangoapps.courseware.field_overrides import OverrideFieldData
 from openedx.core.djangoapps.self_paced.models import SelfPacedConfiguration
+
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
 from xmodule.modulestore.tests.factories import CourseFactory, ItemFactory
 
@@ -25,32 +31,61 @@ class SelfPacedDateOverrideTest(ModuleStoreTestCase):
     def setUp(self):
         SelfPacedConfiguration(enabled=True).save()
         super(SelfPacedDateOverrideTest, self).setUp()
-        self.due_date = datetime(2015, 5, 26, 8, 30, 00).replace(tzinfo=tzutc())
+        self.due_date = datetime.datetime(2015, 5, 26, 8, 30, 00).replace(tzinfo=tzutc())
+        self.non_staff_user, __ = self.create_non_staff_user()
 
     def tearDown(self):
         super(SelfPacedDateOverrideTest, self).tearDown()
         OverrideFieldData.provider_classes = None
 
-    def setup_course(self, display_name, self_paced):
-        """Set up a course with `display_name` and `self_paced` attributes.
+    def setup_course(self, **course_kwargs):
+        """Set up a course with provided course attributes.
 
         Creates a child block with a due date, and ensures that field
         overrides are correctly applied for both blocks.
         """
-        course = CourseFactory.create(display_name=display_name, self_paced=self_paced)
+        course = CourseFactory.create(**course_kwargs)
         section = ItemFactory.create(parent=course, due=self.due_date)
-        inject_field_overrides((course, section), course, UserFactory.create())
+        inject_field_overrides((course, section), course, self.user)
         return (course, section)
 
     def test_instructor_paced(self):
-        __, ip_section = self.setup_course("Instructor Paced Course", False)
+        __, ip_section = self.setup_course(display_name="Instructor Paced Course", self_paced=False)
         self.assertEqual(self.due_date, ip_section.due)
 
     def test_self_paced(self):
-        __, sp_section = self.setup_course("Self-Paced Course", True)
+        __, sp_section = self.setup_course(display_name="Self-Paced Course", self_paced=True)
         self.assertIsNone(sp_section.due)
 
     def test_self_paced_disabled(self):
         SelfPacedConfiguration(enabled=False).save()
-        __, sp_section = self.setup_course("Self-Paced Course", True)
+        __, sp_section = self.setup_course(display_name="Self-Paced Course", self_paced=True)
         self.assertEqual(self.due_date, sp_section.due)
+
+    @patch.dict('courseware.access.settings.FEATURES', {'DISABLE_START_DATES': False})
+    def test_course_access_to_beta_users(self):
+        """
+        Test that beta testers can access `self_paced` course prior to start date.
+        """
+        now = datetime.datetime.now(pytz.UTC)
+        one_month_from_now = now + datetime.timedelta(days=30)
+        course_options = {
+            'days_early_for_beta': 100,
+            'self_paced': True,
+            'start': one_month_from_now,
+        }
+        # Create a `self_paced` course and add a beta tester in it
+        self_paced_course, self_paced_section = self.setup_course(**course_options)
+        beta_tester = BetaTesterFactory(course_key=self_paced_course.id)
+
+        # Verify course is `self_paced` and course has start date but not section.
+        self.assertTrue(self_paced_course.self_paced, "Course is self_paced")
+        self.assertEqual(self_paced_course.start, one_month_from_now, "Course has start date")
+        self.assertIsNone(self_paced_section.start, "Section start date is None")
+
+        # Verify that non-staff user do not have access to the course
+        self.assertFalse(has_access(self.non_staff_user, 'load', self_paced_course))
+
+        # Verify beta tester can access the course as well as the course sections
+        self.assertTrue(has_access(beta_tester, 'load', self_paced_course))
+        self.assertTrue(has_access(beta_tester, 'load', self_paced_section, self_paced_course.id))